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		| Paper: | 
		Cepheids of the disk and halo | 
	 
	
		| Volume: | 
		11, Confrontation Between Stellar Pulsation and Evolution | 
	 
	
		| Page: | 
		56 | 
	 
	
		| Authors: | 
		Wallerstein, George | 
	 
	
	
		| Abstract: | 
		A historical review of the study of Cepheids is first presented. Consideration is then given to their population characteristics, evolution, and chemical composition (e.g., metal abundances, O/Fe values, carbon abundances, s-process abundances, and He abundance). | 
	 
	
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